Week 11 Flashcards

(37 cards)

1
Q

Discuss biological approaches

A

Explanations of the biological basis of
personality operate at several levels,
from “distal” to “proximal”

  • Genetics - distal
  • Brain functioning

◦ Neural systems

◦ Neural structures

◦ Neurochemicals

  • Hormonal factors
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2
Q

Discuss the genetics of personality

A

DNA as source of our similarities & differences

  • ~20,000 protein-coding genes
  • ~3,000,000,000 DNA base pairs
  • Most DNA is shared between people: ~99.6% is identical between any two people
    To what extent does this DNA variation
    underpin variations in personality?
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3
Q

Discuss family studies

A

Examine resemblance between family members as a function of genetic relatedness

  • 50%: child, parent, sibling
  • 25%: grandchild, grandparent, half-sibling, uncle, aunt, nephew, niece
    **Greater resemblance for closer relations implies genetic contribution
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4
Q

Discuss limitations of family studies

A

BUT: genetic contributions are confounded with shared environmental contributions

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5
Q

Discuss twin studies

A

Compare resemblance between monozygotic (MZ) & dizygotic (DZ) twins
MZ twins are 100% related, DZ twins 50% related
Greater resemblance for MZ twins implies genetic contribution
Environments are equally similar for both kinds of twin, so environmental factors are not confounded

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6
Q

Discuss limitations of twin studies

A

BUT: possibility of more similar environments for MZ twins,
& perhaps twins are unrepresentative

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7
Q

Discuss adoption studies

A

Compare resemblance of adopted children to adoptive parents (APs) & biological parents (BPs)

APs are 0% related but supply environment, BPs are 50% related

Degree of resemblance to APs & BPs shows environmental & genetic contributions

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8
Q

Discuss limits of adoption studies

A

BUT: adoption must occur early; problem of selective placement; biological mother provides prenatal environment as well as genes

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9
Q

Discuss heritability (including statistic for personality characteristics)

A

Behavioural genetic studies yield estimates of heritability = proportion of variance in the trait accounted for by genes
*e.g., .8 for height, .7 for weight, .5 for maths aptitude, psychological/personality characteristics almost always .4

Most personality attributes show heritabilities from .3 to .5
This is even true for apparently purely learned attributes (e.g.,
political attitudes, vocational interests)

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10
Q

What are some issues/caveats of heritability?

A
  • Substantial heritability of personality does not mean that parents and children are always similar in their personality traits
  • Heritability relates to variation within a population: it says nothing about genetic contribution to any individual’s personality
  • Heritability does not imply that personality is fixed
  • A substantial heritability can coexist with substantial environmental contributions to personality
  • 100% both environment and genes
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11
Q

Describe the role of the environment

A

Behavioural genetics clarifies the role of the environment

‘Shared’ environmental influences (those that make siblings more similar) tend to be weak

  • e.g., parental education, neighbourhood, class, ethnicity, diet

‘Non-shared’ environment influences (those that make siblings more different) tend to be much stronger

  • e.g., illnesses, friend groups, differential treatment by parents

Environmental factors can themselves be genetically influenced

  • e.g., susceptibility to accidents & other life events
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12
Q

Discuss the idea of shared vs non-shared environments

A

“salient environmental effects do not make siblings similar.
That is, they are not shared by children growing up in the
same family.”

“theories of socialization had assumed that children’s
environments are doled out on a family-by-family basis. In
contrast, the point of non-shared environment is that
environments are doled out on a child-by-child basis.”

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13
Q

Discuss the concept of specific, personality related genes

A

Heritability says nothing about specific genes or genetic mechanisms
Several specific genes have been identified in candidate gene studies, but they do not replicate

  • e.g., Novelty-seeking & dopamine sensitivity
    More recent research, surveying the entire genome with huge samples, finds few replicable personality genes

Most traits appear to be influenced by hundreds of genes,
each with very small effect
note: study found around 190 genes effect one trait of neuroticism

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14
Q

Discuss brain functioning: systems, Eyesenck’s theory

A

Eysenck’s theory
Extraversion & low cortical
arousal

  • Leads to desire for stimulation (e.g., novelty, excitement)
    Neuroticism & limbic system
    reactivity
  • Leads to greater autonomic NS arousal to threat & stress
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15
Q

Discuss brain functioning: systems, Gray’s theory

A

Impulsivity & “behavioural activation system” (BAS)

◦ Linked to sensitivity to reward & pleasure

◦ Associated with a tendency to approach rewards
Anxiety & “behavioural inhibition system” (BIS)

◦ Linked to sensitivity to punishment & pain

◦ Associated with a tendency to avoid punishments

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16
Q

Discuss brain structures

A

Some links have between found between

Big 5 & the size (volume) of brain structures

  • Extraversion with a region involved in processing reward information
  • Agreeableness with regions that process information about other people’s intentions and mental states

However, a recent meta-analysis suggests these links are questionable

A more promising direction is exploring patterns of functional activity and connectivity in the brain

17
Q

Discuss extraversion and neuroticism in terms of brain structures

A

Neuroticism

  • Associated with high resting activity of the amygdala
  • Greater neural response to errors in dorsal anterior cingulate cortex (involved in conflict monitoring)

Extraversion

  • Greater neural response to experiences of reward in frontal brain regions
18
Q

Discuss the chemicals of brain functioning

A

Personality factors may be associated with
neurotransmitter activity in the brain
Extraversion & dopamine levels

  • Exploration, approach & incentive motivation
    Neuroticism & norepinephrine levels
  • Negative emotion, vigilance for threat, cautiousness: ‘neuro behavioural warning system’
    Agreeableness & opioids* Attachment processes
    Constraint & serotonin levels* Inhibition of emotional response, low impulsiveness; low serotonin → aggression & emotional instability
19
Q

Discuss hormonal factors

A

There is evidence that personality is influenced by prenatal exposure to sex hormones Ratio of 2nd (index) to 4th (ring) finger (2D:4D) is associated with testosterone exposure

Lower ratio in men than women, especially on right hand i.e., men tend to have longer ring finger than pointer finger

Among men, lower 2D:4D ratio correlates with:

  • Physical aggression
  • More stereotypically ‘masculine’ career interests (realistic &enterprising)
  • Less stereotypically feminine gender role
    In women, lower 2D:4D ratio correlates with:
  • More indirect aggression (spreading rumours, malicious humour, excluding people)
  • More stereotypically ‘masculine’ interests (enterprising, less social)
20
Q

What are some Cognitive explanations for personality?

A

Explain personality with reference to cognitive processes & structures

◦ Thoughts, plans, memories, beliefs, strategies

Focus on ways of thinking & the construction of meaning◦ Having versus doing

◦ People as active sense-makers

◦ Emphasis on ‘experience-near’ phenomena

◦ Motivation to understand & predict

◦ Person-as-scientist model

21
Q

What are the 4 cognitive approaches?

A

We will examine four approaches

◦ Perceiving (personal constructs)

◦ Explaining (attributional style)

◦ Thinking (emotional intelligence)

◦ Representing (the self

22
Q

Discuss George Kelly’s personal constructs

A

George Kelly proposed that humans are primarily driven to understand, predict &control their environment

We develop ‘theories’ to do so

He called these theories ‘personal constructs’

  • ‘Personal’ because idiosyncratic to individuals
  • We construct a sense of the world from these theories
  • We use them to construe that world

To Kelly, human cognition is contrastive

  • E.g., warm versus cold, honest versus untrustworthy

Each person has a system of constructs in terms of which they perceive the world

This system of constructs is the personality

This is a radical approach

  • It focuses on perception versus behaviour
  • ‘Idiographic’ focus on the person’s uniqueness
23
Q

What is The Repertory Grid?

A

A qualitative and quantitative interview method, developed by George Kelly, that explores how an individual perceives and makes sense of their world. It involves eliciting personal constructs (dichotomies of meaning) by comparing a set of “elements” (such as people, objects, or events) and then uses this information to create a grid or matrix that maps the relationships between the elements and the constructs.
Basically has people listed on it and you have to describe how two of them are different to a third person and refer to the difference

24
Q

What are Construct systems?

A

Constructs can be analysed in many
ways to generate a ‘map’ of the
individual’s construct system

  • Simplicity versus complexity
  • Rigidity
  • Internal conflict
25
What are attributions?
‘Attributions’ are about how we explain it People aim to determine the causes of events and experiences Attributions differ on several dimensions - Internal versus external (i.e., dispositional vs situational) - Stable versus unstable (i.e., lasting vs transient) - Global versus specific (i.e., broad vs narrow) Causes can vary along these dimensions
26
What is Attributional style?
Are there individual differences in the sorts of attributions people make? - Concept of attributional (or ‘explanatory’) style - Focus on explanations for negative events
27
Give some examples of attributional style?
- Focus on explanations for negative events - e.g., “You do badly on a psychology exam. Why?” ◦ “I’m stupid” **Internal, Stable, Global** ◦ “I’m not good at psych” **Internal, Stable, Specific** ◦ “I was tired” **Internal, Unstable, Specific** ◦ “The exam was unfair” **External, Unstable, Specific** ◦ “I have bad luck” **External, Stable, Global** Attributional style is focused on negative events * ‘Pessimism’ is the disposition to explain such events with Internal, Stable & Global causes ◦ this sense of pessimism differs from standard sense (i.e., negative expectations for the future) * Pessimists may also explain positive events as External, Unstable & Specific (e.g., due to chance) * Both pessimism & optimism may be irrational
28
How can attributional style be predictive?
Attributional style predicts many phenomena ◦ Vulnerability to depression ◦ Poorer academic performance ◦ Worse physical health (present + future) ◦ Shorter life-span ◦ Worse sales performance ◦ Poorer performance (especially after bad result) among sportspeople ◦ Losing US presidential elections ◦ Pessimistic song lyrics precede weak economic performance
29
Discuss Emotional Intelligence
*Constructs & attributions refer to perceptual and explanatory processes * Abilities & skills are another kind of cognitive concept * Most cognitive abilities are school-related ◦ Verbal, mathematical & spatial abilities * Recent extension of the intelligence concept to include emotional & social abilities
30
What are the components of EI?
Perceiving emotion ◦ Accurate recognition of own emotions & nonverbal perception of other people’s Using emotion ◦ Use of own emotions to guide & plan behaviour Understanding emotion ◦ Predicting others’ emotional states & reasoning about them Managing emotion ◦ Ability to control & regulate emotions - EI is distinct from general intelligence - It is ideally measured not by self-ratings but by performance on tests with correct & incorrect answers - Correlates with Openness & Agreeableness - Has many correlates ◦ Academic performance ◦ Job performance ◦ Social sensitivity ◦ Less antisocial behaviour
31
Describe the self
The self can be understood as a mental representation of one’s personal attributes Two individual difference variables relevant to it 1. Self-complexity ◦ Degree to which the self’s structure is complex 2. Self-esteem ◦ Degree to which the self is positively valued
32
Discuss self-complexity
Defined as number of ‘self-aspects’ and degree of distinctness of them - Early research suggested that greater self-complexity buffers people against negative life events - However, it also seemed to be associated with greater depression - If ‘complexity’ implies a fragmented, incoherent or confused self, it may have negative consequences - ‘Self-concept clarity’ may be more important than self-complexity
33
List some self-concept clarity test items
- My beliefs about myself often conflict with one another - I spend a lot of time wondering what sort of person I am - Sometimes I feel that I am not really the person that I appear to be - My beliefs about myself seem to change very frequently
34
What is self-esteem?
- Having a positive global self-evaluation is frequently claimed to have many benefits, but ... ◦ Little evidence it promotes (rather than results from) academic achievement ◦ Little evidence that it promotes work performance ◦ Little evidence it promotes health ◦ Not associated with less antisocial behaviour ◦ Not associated with greater social sensitivity ◦ May promote aggression in response to insults and when self-esteem is threatened ◦ Need for positive self-view may not be cross-culturally universal
35
Discuss complexities of self-esteem
- The stability or consistency of self-esteem may matter more than its level - ‘Fragile’ self-esteem fluctuates in response to life events‘ - Defensive’ self-esteem ◦ High explicit + low implicit self-esteem - Narcissism ◦ Sense of superiority & arrogance ◦ Entitlement to special treatment ◦ Need for admiration ◦ Sensitivity to criticism
36
Discuss Narcissism & social media
Social networking sites may be ideal playgrounds for narcissists, with opportunities to ... ◦ create self-promoting content ◦ display personal appearance ◦ pursue many shallow relationships Study by Davenport et al. (2014) examined how Facebook &Twitter use correlates with narcissism ◦ “my body is nothing special” versus “I like to look at my body” ◦ “I am more capable than other people” versus “There is a lot that I can learn from other people”
37
More narcissistic people were...
◦ Were more active on Facebook & had more FB friends ◦ Tweeted more & had more Twitter followers ◦ Wanted their profiles to attract friends/followers more ◦ Believed it was more important that friends/followers admired them ◦ Research on Instagram shows similar findings: narcissism goes with more selfies, more time & more frequent profile picture updates (Moon et al., 2016) ◦ Associations with narcissism may be larger for social media with a strong visual component